Soft serve ice cream mixer



FIG. 1 is a perspective view of the soft serve ice cream mixer;

FIG. 2 is a front view;

FIG. 3 is a back view;

FIG. 4 is a right side view;

FIG. 5 is a left side view;

FIG. 6 is a top view; and,

FIG. 7 is a bottom view. 

I claim the ornamental design for soft serve ice cream mixer, as shown. 